Opensource Compliance Issue.
[platform/core/graphics/cairo.git] / test / degenerate-curve-to.c
1 /*
2  * Copyright © 2005 Red Hat, Inc.
3  * Copyright © 2009 Chris Wilson
4  *
5  * Permission to use, copy, modify, distribute, and sell this software
6  * and its documentation for any purpose is hereby granted without
7  * fee, provided that the above copyright notice appear in all copies
8  * and that both that copyright notice and this permission notice
9  * appear in supporting documentation, and that the name of
10  * Red Hat, Inc. not be used in advertising or publicity pertaining to
11  * distribution of the software without specific, written prior
12  * permission. Red Hat, Inc. makes no representations about the
13  * suitability of this software for any purpose.  It is provided "as
14  * is" without express or implied warranty.
15  *
16  * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
17  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
18  * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
19  * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
20  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
21  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
22  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23  *
24  * Author: Carl D. Worth <cworth@cworth.org>
25  *         Chris Wilson <chris@chris-wilson.co.uk>
26  */
27
28 #include "cairo-test.h"
29
30 #define SIZE 30
31
32 /* Another attempt at avoiding unnecessary splines was made, where
33  * a curve-to that ended on the same point as it began were discarded.
34  */
35 static cairo_test_status_t
36 draw (cairo_t *cr, int width, int height)
37 {
38     cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
39     cairo_paint (cr);
40
41     cairo_set_line_width (cr, 1.0);
42     cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
43     cairo_set_line_join (cr, CAIRO_LINE_JOIN_BEVEL);
44     cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
45
46     /* entirely degenerate */
47     cairo_move_to (cr,
48                     2.5, 2.5);
49     cairo_curve_to (cr,
50                     2.5, 2.5,
51                     2.5, 2.5,
52                     2.5, 2.5);
53     cairo_stroke (cr);
54
55     /* horizontal */
56     cairo_move_to (cr,
57                      5.5, 2.5);
58     cairo_curve_to (cr,
59                     22.0, 2.5,
60                     -0.5, 2.5,
61                      5.5, 2.5);
62     cairo_stroke (cr);
63
64     /* vertical */
65     cairo_move_to (cr,
66                     7.5,  0.0);
67     cairo_curve_to (cr,
68                     7.5, 11.0,
69                     7.5,  0.0,
70                     7.5,  0.0);
71     cairo_stroke (cr);
72
73     cairo_translate (cr, 15, 0);
74
75     /* horizontal/vertical */
76     cairo_move_to (cr,
77                      5.5,  0.5);
78     cairo_curve_to (cr,
79                     -0.5,  0.5,
80                      5.5, 10.5,
81                      5.5,  0.5);
82
83     cairo_translate (cr, 10, 0);
84
85     /* vertical/horizontal */
86     cairo_move_to (cr,
87                      5.5,  0.0);
88     cairo_curve_to (cr,
89                      5.5, 11.0,
90                     10.5,  0.0,
91                      5.5,  0.0);
92     cairo_stroke (cr);
93
94     return CAIRO_TEST_SUCCESS;
95 }
96
97 CAIRO_TEST (degenerate_curve_to,
98             "Test optimization treating degenerate curve_to as line_to",
99             "path", /* keywords */
100             NULL, /* requirements */
101             40,
102             5,
103             NULL, draw)